Geometry
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Transversal
is a line that intersects two or more other lines at distinct points; all of the lines lie in the same plane

Polygon
is a closed plane figure whose sides are line segments that intersect only at the endpoints.

Corresponding Angles
two angle that lie in the same relative position

Perimeter
the sum of the length of its sides

Median
is a line segment that joins a vertex of a triangle with the midpoint of the opposite side.

Colinear
points that lie on the same line.

Adjacent angles
two angles that have a common vertex and a common side betweeen them

Midpoint
The point on a line segement or arc that seperates the line segment into two congruent parts.

Congruent Angles
angles that share the same measurement of angle.

Reflex angle
an angle whose measure is between 180 to 360

Bisector
is a ray that seperates an angle or segment into two seperate congruent seperate parts.

Complementary angles
angles that sum up to 90 degrees.

Sets
an collection of objects, numbers, or points.

Line
part of a line determined by two points and all points on the line that lie between those two points.

Angle
the plane figure formed by two rays that share a common endpoint

Acute angle
angle whose measure is below 90 degrees.

congruent segment
line segments that have same measures

Parallelogram
a quadrilateral that has two pairs of parallel sides

Rhombus
a parallelogram with two congruent adjacent sides

Rectangle
a parallelogram that contains a right angle.

Square
is a rectangle that has two congruent adjacent sides

Quadrilateral
is a polygon that has four sides

Kite
a quadrilateral that has two distinct pairs of congruent adjacent sides

Trapeziod
a quadrilateral having exactly two parallel sides.